213 JOl RXAL OF THE ARNOLD ARBORETUM [vol. i 



Mem. N.Y. Bot. Card. I. Ill (Cat, FL Mont.) (1900), quoad si)ecim. 



CouUeri, non Andorsson. — S. Ttveedy iHall in Bot. Gaz. xl. 377, ])1. 12, 

 figs. 3-7 (1905); ai)ud Coulter & Nelson, New Man. Rocky Mts. Bot. 135 

 (1909). 



I am not fully convinced of the accuracy of Ball's statement " lliat this 

 Willow is specifically distinct from S, Barrattia?ia/' In igO.'), he said: 

 '* Not only do the nearly glabrous leaves and the glabrous ca])sules serve to 

 distinguish it, but the leaf margin thickly set with conspicuous glands is a 

 marked character," In his diagnosis he, however, states; ** capsules green 

 and glabrous, or sometimes finely pidjcscent near the apex." The glands 

 or glandular dentations of the leaf margin very often occur in ^S. Barrattiana 

 where they are usually hidden by the ])ubescence of the leaf. The shai)e of 

 the leaves varies in the same manner in both fonns. In the characters of 

 the flowers I cannot detect any dift'erence; the bracts, too, are o]K)vate- 

 lanceolate, not obovate. In var. Tueedyi the leaves usually i)osscss some 

 stomata in the ejudennis of the up])er surface while these are wanting in 

 the ijY^c. This character needs further observation. In 1909 Ball gives 

 the range as follows: " In bogs and along mountain streams, 2500 3000 m. 

 altitude, not common; known only from the Bighorn Mountains of northern 

 Wyoming, the Yellowstone Park, and Teton Basin." From what I have 

 seen I can record the following specimens of var. TweeJyL 



Wyoming. Sheridan County: head of Big Goose Creek, Bighorn Moun- 

 tains, July 15-24, lRf)3, F. Tweahj (No. 11, fr. im., type; C; in C. No. 11 f.. 

 K in., fr. im.; same in W.); Tongue Biver, alH)ut 3(^70 m., July 13, IfMH), J, G. Jack 

 (fr.; A.); Bighorn Mountains, about 32(X) ni., August, 1899, F. Ttrerdj/ (No. 2447, 

 fr.; N.; amentis 7.5:1.8 cm. magiiLs); head waters of Tongue River, July, 1881), F. 

 Tireahj (No. 87, fr. ini. 86, fr.; N.), Lincoln County : Two-Two (?) Tea Pass, 

 about 3300 ni., August, 1897, F, Tweedy (No. 300, st.; N.), ? County: Chug Creek, 

 June 10, 1898, E, Nelson (No. 4349, f. tantum [ui. =Behhimia\\ C, N.; Ball refers 

 the female to »S'. vutnticola in W.). 



Montana. Park County : Trail River Mountains, 1872, /. M. Coulter (f.; N., 

 W,); Madi^son, Spanish peaks, July 20, 1901, J, Vogel (m., f.; Cor.); Yellowstone 

 Park, El(H-trie Peak, July 2G, 1902, E. C\ Shear (No. 109. f., ex parte; N., W.; part 

 of the nianher belongs to S. Bardayt). 



4. S. amplifolia Coville in Proc. Am. Acad. Sci. it. 282, t. xv (1900); in. 

 314, t. 3.5 (1901). — I cannot add anything to Covillc's excellent dcscrii)tion 

 and plate after having seen the type which was collected at In(Han Village 

 on June 22, 1899, by Coville and Kearnay (No. 1153, f.; W.). So far the spe- 

 cies is only known from Yakutat Bay, Alaska, where it "was first observed 

 on the west shore of the bay growing on and near the sand dunes that He 

 back of the beach, and has afterward been collected in Disenchrintmcnt Bav 

 Egg Island, Hubbard Glacier, and Ilaenkc Island, and later at the Indian 

 village at the head of Yakutat Bay east shore." As Com'Hc says: it '* bears 

 considerable resenddance to rich ard.wnii and barclayi but the species from 

 which it differs least is Salix hookeriafia.'^ Both lack tlie stij)nles so con- 

 spicuous in S. Richardsonii and the main difference between amplifolia and 

 Uoolccriana Is indicated in the key on p. 213, S. Ilookeriana, too, has a 



